Unexpected Fry In Fish Tank

[RedFry]

I recently went to do a partial water change on my new 40l tank, and I noticed there were some fry in my tank?! I'm really new to everything fish so I'm really not sure how to go about looking after them, nor do I know what kind of fish they are. I have two Balloon mollys, two platys, three guppies and half a dozen neon tetras, and for all I know, thy could have been any of them, when I purchased them, they were all taken from male only tanks. I only count four in there, and they're pretty stealthy, hiding in all the plants, does that mean any other fry were eaten? I'm very unsure as to what to do in this situation and any advice would be greatly appreciated, thank you!

[malagabob]

Possibly others were eaten. Fish are cannibals. Possibly tetras. WhenI had my cold water tank, I was lucky to salvage some spawning Put the fertilised eggs in a floating nursery tank within the main tank.
Nurtured them till I thought they were large enough not to be eaten. Put them in the main tank. Gone, eaten within a few seconds.

[Prudie]

You really need to put them in a separate tank or a sealed off nursery in your own tank or they are highly likely to get eaten.

http://www.liveaquaria.com/PIC/article.cfm?aid=257

[horseshoes]

I'll bet a pound to a penny what you have are guppy fry!

[wildwood]

The first suspect would of course be the guppies, but as they came from male only tanks you'd have noticed if one was bigger and plain. It won't be the neon tetras, they are a lot harder to breed and lay eggs. My choice would be that one of the platies is a female, look at the bottom fin - the males have a pointed fin that they use for mating, the females have a normal shaped fin underneath. The male mollies often have more elaborate fins so they are easier to sex when mature.

[wildwood]

If they are still there and you want to save them...... get a 'live-bearer net' from the fish/pet shop. That saves getting another tank and should keep them safe until they are big enough to joint the others. Feed them on a little finely ground food.